media: Add MediaOzonePlatform support

content/common/gpu/media/ozone_video_decode_accelerator.cc

+// Copyright (c) 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "content/common/gpu/media/ozone_video_decode_accelerator.h"
+
+#include "base/logging.h"
+#include "content/common/gpu/media/video_decode_factory_ozone.h"
+
+namespace content {
+
+OzoneVideoDecodeAccelerator::OzoneVideoDecodeAccelerator(
+    const base::Callback<bool(void)>& make_context_current) {
+  if (!VideoDecodeFactoryOzone::GetInstance())
+    LOG(FATAL) << "Failed to initialize Video Decode Accelerator on OZONE";
+
+  // vignatti(TODO): make_context_current is not used
+}
+
+OzoneVideoDecodeAccelerator::~OzoneVideoDecodeAccelerator() {
+}
+
+bool OzoneVideoDecodeAccelerator::Initialize(media::VideoCodecProfile profile,
+    Client* client) {
+  return VideoDecodeFactoryOzone::GetInstance()->Initialize(profile, client);

[dshwang, 2014/05/06 17:07:45]

I'm not sure you can use singleton pattern, because afaik multiple
OzoneVideoDecodeAccelerator instances are created for every html video.
So ozone-wayland or ozone-dri should register factory function, and this class
should create an impl instance using the factory function. The change perhaps
resolves cross-dependency automatically.

+}
+
+void OzoneVideoDecodeAccelerator::Decode(
+    const media::BitstreamBuffer& bitstream_buffer) {
+  VideoDecodeFactoryOzone::GetInstance()->Decode(bitstream_buffer);
+}
+
+void OzoneVideoDecodeAccelerator::AssignPictureBuffers(
+    const std::vector<media::PictureBuffer>& buffers) {
+  VideoDecodeFactoryOzone::GetInstance()->AssignPictureBuffers(buffers);
+}
+
+void OzoneVideoDecodeAccelerator::ReusePictureBuffer(int32 picture_buffer_id) {
+  VideoDecodeFactoryOzone::GetInstance()->ReusePictureBuffer(
+      picture_buffer_id);
+}
+
+void OzoneVideoDecodeAccelerator::Flush() {
+  VideoDecodeFactoryOzone::GetInstance()->Flush();
+}
+
+void OzoneVideoDecodeAccelerator::Reset() {
+  VideoDecodeFactoryOzone::GetInstance()->Reset();
+}
+
+void OzoneVideoDecodeAccelerator::Destroy() {
+  VideoDecodeFactoryOzone::GetInstance()->Destroy();
+}
+
+}  // namespace content